12109351 has 4 divisors (see below), whose sum is σ = 12118600. Its totient is φ = 12100104.

The previous prime is 12109343. The next prime is 12109367. The reversal of 12109351 is 15390121.

12109351 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 12109351 - 2³ = 12109343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12109381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2256 + ... + 5413.

It is an arithmetic number, because the mean of its divisors is an integer number (3029650).

Almost surely, 2^12109351 is an apocalyptic number.

12109351 is a deficient number, since it is larger than the sum of its proper divisors (9249).

12109351 is an equidigital number, since it uses as much as digits as its factorization.

12109351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9248.

The product of its (nonzero) digits is 270, while the sum is 22.

The square root of 12109351 is about 3479.8492783453. The cubic root of 12109351 is about 229.6361670436.

Adding to 12109351 its reverse (15390121), we get a palindrome (27499472).

The spelling of 12109351 in words is "twelve million, one hundred nine thousand, three hundred fifty-one".